37 CFR 260.7 - Unknown copyright owners.

If the designated collecting agent is unable to identify or locate a copyright owner who is entitled to receive a royalty payment under this part, the collecting agent shall retain the required payment in a segregated trust account for a period of three years from the date of payment. No claim to such payment shall be valid after the expiration of the three-year period. After the expiration of this period, the collecting agent may use the unclaimed funds to offset any costs deductible under 17 U.S.C. 114(g)(3).